Port-able steam-engine



(No- Model.) 3 Sheets-Sheet 1;. J. WALRATH.

PORTABLE STEAM ENGINE.

No. 284,344. Patented Sept. 4, 1888.

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3 Sheets-Shet 2.

(No Model.)

J. WALRATH. PORTABLE STEAM ENGINE.

,344. Patented Sept. 4, 1883.

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(No Model.) 3 Sheets$heet 3.

J. WALRATH. PO TABLE STEAM ENGINE. o. 284,344. Patented-Sept OOOOOOOO :Rs. PMm-Lilhognpher. washivmnm D. c.

75 JEssE WALRATH, or

sPEerFIcArroN forming part of renters r RAGINE, WISOONSIN.

PORTABLE S'TEAM-I-ENGINE.

are no. 284,3 4 dated September a, 1883.

Application filed J'uly 10.1883. (No model.)

To all whom it may concern:

Be it known that I, J ESSE WALR'ATH, a citizen of the United States, residing at Racine, in the county of Racine and State of Wisconsin, have invented certain newand useful Iniprovements in Portable Steam-Engines; andI do hereby declare the following to be a full,

clear, and exact description of the invention,

proved portable steam-engine.

such as will enable others skilled in the art to which it appertains to make and use the same.

Thisinventiouconsists, mainly, in mounting a portable stea1n-engine onirunners, and in arranging the steam-engine diagonally, so that while. the fly-wheel remains as elevated as need be the cylinder is seated comparatively low down and the strains due to the working of the engine are less severe on the boiler.

In order that my invention may be clearly understood, I have illustrated in the annexed drawings, and will proceed to describe, the best form thereof at present known to me.

Figure 1 is a perspective view of my im Fig. 2 is a rear end view, the rear standards for the support of the end of the boiler being omitted, so as to better illustrate the feed-water heater. Fig. 3 is a sectional side elevation of parts of the machine, illustrating the use of a feed-water pump operated from the rock-shaft of the valve-gearing of the steam-engine, in lieu of the steam-pump shown in Fig. 1.

' cal parts in all thefigures.

The same letters of referenceindicate identi- The boiler A is'of the ordinary locomotiveboiler type. It is mounted on two long skids or runners, B B, by means of brackets a a, secured to the fire-box and standards Aat the rear end, as clearly shown in Fig. 1. The boiler is mounted just high enough so thatthe ashpit A, which may be made detachable, will clear the ground.

The steam-engine, which may be of any dea slide-valve engine being shown, is arranged on one side ofthe boiler at an angle of, say, twenty degrees, more or less. I prefer to use afeed-water heater, G, of any preferred internal construction, in connection with this portable steam-engine, and to mount it horizontally andtransversely under the bar;

rel of the boiler, it being provided or constructedwith a suitable stand, 0, at each end, B B. It is also for support on the runners support for the forward end of the boiler, which may be loosely seated in such saddleor be bolted thereto in such a way expanding and contracting, may slide in the saddle.

is bolted to a correspondinglyinclined plate, 0 formed on thestand c at one end of the feed water heater. The cylinder end of the steamengine is supported solely on this stand of the from theboiler. The main shaft F of the steamengine is located across the top of the boiler over the fire-box. wheel is supported in a bearing, H, formed on the forward upper end of the main frame E of bolted to a seat, G, bolted to the boiler. A similar seat, G, is bolted tothe boiler on the other side, for the support of the out-bearing H of the main shaft, which carries the usual fly-wheel pulley, K, on the outer side of such out-bearing. The bearings H H are so arranged that their'base-lines are parallel to the axis of the cylinder. The rock-shaft I, which transmits themotion of the eccentric on the main shaftto the slide-Valve in the steam-chest, is supported in a bearing formed on or secured to the main frame E.

A feed-water pump is mounted upon one of boiler. A steam-pump such as shown in Fig.

Fig. 3, the plunger of which may be driven by a crank on the rock-shaft I through a suitable connecting-rod.

In case no feed-water heater i is used, the steam-cylinder will be supported on a simple stand, which may extend across under the barrel of the boiler, and may be provided with a saddle for the support of such boiler, acting in these respects just like the feed-water heater shown and described. I

This portable engine, though it maybe used anywhere, was especially designed for use in the forests, for operating portable saw-mills and the like, where it has been found it is easier to transport an engine mounted on runners than one mounted on wheels. The diagonal arrangement of the steam-engine was adopted feed-water heater, and is entirely disconnected provided with asaddle, c, as an additional that the boiler,in

The cylinder D of the steam-engine is 0011- structed with an inclined base-plate, b, which Its end .carryingthe crank- 7 the steam-engine, whichbeariug is fitted and x 1 may be used, or a pump suchas shown in\ in order that the steam-cylinder may be located as near the ground as possible, and the fly-wheel be made of comparatively large di ameter and yet be high enough above the ground, so that the belt from it may clear all obstructions.

In the practical use of this portable steam-' engine I have found that vibrations of the boiler due to the running of the engine are very much less than in any other portable steam-engine known to me; also, that the engine and boiler suffer less strain in transporting; also, that the engine will run with more steadiness, almost as steady as a true stationary engine seated on a fixed foundation. y Having thus described my invention, what I claim'isl. The combination, substantially as before set forth, of the boiler, the runners, and the diagonally-arranged steam-engine, the cylinder end of which is supported on the runners and the main shaft across the top of the boiler.

2. The combination, substantially as before set forth, of the boiler, the runners, the diagonally-arrang'ed steam-engine, and the trans verse feed-Water heater, which supports the barrel of the boiler as well as the cylinder end of the steam-engine.

In testimony whereof I affixi my signature in presence of two witnesses.

JESSE VVALRATH.

- \Vitnesses:

CHARLES H. LEE, M: J. SMoLLEN. 

